Emergent Phenomenon

by Arya Akhavan (September 2013)
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Gemology Projectopen
L/W
102%
Design RI
1.62
H/W
56%
Gear
96
V/W³
0.168
Symmetry
3 (mirrored)
Facets
52
Tiers
10
Crown
22
Pavilion
30

This somewhat simple trillion has a deceptively complex reflection pattern, with an extremely high degree of contrast and an even larger number of virtual facets. Try looking at the raytrace in GemCAD to see why! Works in materials from quartz to CZ (RI = 1.54 - 2.16) with no changes, but I prefer it in peachy tourmaline. Suggested size = 6-15 mm

Wireframe

Emergent Phenomenon 3D view
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Pavilion

#AngleFacetsNotes
G190.00°
141846507882
Set stone size.
G290.00°
112143537585
Level girdle.
P346.99°
112143537585
Meet P1, P2
P245.68°
141846507882
Level girdle.
P143.30°
151747497981
Cut to centerpoint.

Crown

#AngleFacetsNotes
C135.00°
141846507882
Set girdle width.
C235.00°
112143537585
Level girdle.
C334.00°
131945517783
Meet G1, G2, C1, C2
C432.93°
164880
Meet G1, C1
T0.00°
24
Meet C1, C3, C4; C2, C3